Pickling sludge dewatering device

Abstract

The utility model relates to the technical field of sludge dewatering, and discloses a pickling sludge dewatering device which comprises a working table, a box body is fixedly connected to the upper surface of the working table, a feeding port and a discharging port are formed in the two ends of the box body respectively, a plurality of transmission rollers are arranged on the inner wall of the box body, and filter screens are arranged on the surfaces of the transmission rollers. An extrusion mechanism is fixedly connected to the upper surface of the box body, a first scraper blade is arranged at a discharge port of the box body, and a water collecting tank is fixedly connected to the inner wall of the box body. According to the pickling sludge dewatering device disclosed by the utility model, the three groups of cylinders are used for adjusting the heights of the corresponding compression rollers, so that sludge is preliminarily extruded and dewatered from the first compression roller at the feeding hole to control the thickness of a filter cake, and then the sludge passes through the two rear compression rollers in sequence to continuously extrude and dewater the filter cake, so that the water outlet rate is improved, and the sludge dewatering efficiency is improved. Sludge can be prevented from being accumulated on the filter screen, operation is easy, fast and convenient, a large amount of sludge can be dewatered, and the dewatering rate is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge dehydration, in particular to a pickling sludge dehydration device. Background Art

[0002] With the rapid development of industrialization, especially the booming metal processing, electroplating, and chemical industries, pickling processes generate a large amount of sludge. This sludge is not only bulky and contains a large amount of water, but also contains harmful substances such as heavy metals and acidic substances. If directly discharged or improperly handled, it will cause serious pollution to the environment, affecting ecological balance and human health.

[0003] Patent publication number CN217724811U discloses a belt-type sludge dewatering device comprising a frame, a head located above a dewatering table, a first roller around which a first filter cloth belt is wound, a second roller around which a second filter cloth belt is wound, a fourth roller rotatably mounted on the head, a folding device comprising two brackets arranged at an angle and each bracket having a folding roller mounted thereon, a first pressing roller assembly located downstream of a third and fourth rollers, a fifth roller around which the first filter cloth belt is wound via the third roller, the first pressing roller assembly, and two folding rollers, and a sixth roller around which the second filter cloth belt is wound via the fourth roller, the first pressing roller assembly, and two folding rollers. Sludge is transferred between the first and second filter cloth belts, and the head reciprocating motion causes the first and second filter cloth belts to be folded onto the dewatering table for dewatering. This dewatering device has the advantages of high automation and good sludge dewatering efficiency.

[0004] However, the above technology still has the following problems:

[0005] During the process of squeezing and dehydrating the sludge, the degree of squeezing cannot be adjusted. For the sludge near the feed inlet, it is easy to cause the sludge near the feed inlet to accumulate near the feed inlet when it is squeezed by the pressure roller for the first time. Due to the high water content and relatively large volume of the sludge, the distance between the pressure roller and the filter screen is small, which will cause the load on the motor driving the pressure roller to rotate to be large. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a pickling sludge dewatering device, which can adjust the height of the pressing roller and control the extrusion.

[0007] The utility model provides the following technical solution: a pickling sludge dewatering device, comprising a workbench, the upper surface of the workbench is fixedly connected to a box body, the two ends of the box body are respectively an inlet and an outlet, the inner wall of the box body is provided with a plurality of transmission rollers, the surface of the transmission roller is provided with a filter screen, the upper surface of the box body is fixedly connected to an extrusion mechanism, a scraper is provided at the outlet of the box body, and the inner wall of the box body is fixedly connected to a water collecting tank.

[0008] Furthermore, a plurality of windows are provided on the outer wall of the box.

[0009] Furthermore, the extrusion mechanism includes a cylinder fixedly connected to the upper surface of the box body, the output end of the cylinder is fixedly connected to a U-shaped plate, the U-shaped plate is rotatably connected to a pressure roller, the surface of the U-shaped plate is fixedly connected to a driver, the output end of the driver is fixedly connected to the pressure roller, and the driver is arranged in the window.

[0010] Furthermore, there are three extrusion mechanisms, and the pressure rollers in each group are located directly above the transmission rollers.

[0011] Furthermore, a scraper 2 for cleaning the surface of the pressure roller is fixedly connected to the side of the U-shaped plate.

[0012] Furthermore, baffles are fixedly connected to both sides of the inner wall of the box body, the lower surface of the baffle is in contact with the surface of the filter screen, and the width of the baffle is slightly smaller than the distance from the pressure roller to the inner wall of the box body.

[0013] Furthermore, the water collecting pool is located between the upper and lower rows of driving rollers, one end of the water collecting pool is slightly tilted downward toward the discharge port, and a drainage outlet passing through the box body is provided at the front end of the water collecting pool.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This pickling sludge dewatering device uses three sets of cylinders to adjust the height of the corresponding pressing rollers. The sludge is initially squeezed and dehydrated by the first pressing roller at the feed inlet to control the thickness of the filter cake. The filter cake is then squeezed and dehydrated by the following two pressing rollers in sequence, thereby improving the water output rate and preventing sludge from accumulating on the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the interior of the box of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the box body of the present invention.

[0019] In the figure: 1. Workbench; 2. Box; 3. Feeding port; 4. Box; 5. Drive roller; 6. Filter screen; 7. Scraper 1; 8. Water collecting tank; 9. Window; 10. Cylinder; 11. U-shaped plate; 12. Pressing roller; 13. Driver; 14. Scraper 2; 15. Baffle; 16. Drainage port. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figures 1 to 3 A pickling sludge dewatering device includes a workbench 1, the upper surface of the workbench 1 is fixedly connected to a box body 2, the two ends of the box body 2 are respectively an inlet 3 and a discharge port 4, the inner wall of the box body 2 is provided with a plurality of transmission rollers 5, the surface of the transmission roller 5 is provided with a filter screen 6, the upper surface of the box body 2 is fixedly connected to a squeezing mechanism, a scraper 7 is provided at the discharge port 4 of the box body 2, and the inner wall of the box body 2 is fixedly connected to a water collecting tank 8.

[0022] The pickling sludge dewatering device in the present invention is similar in structure to the existing belt-type sludge dewatering device, such as the patent with announcement number CN217724811U which discloses a belt-type sludge dewatering device. Figures 1 to 3 As shown, the pickling sludge dewatering device of the present invention, when in use, first drives three groups of cylinders 10 to adjust the height of the U-shaped plate 11, thereby adjusting the distance between the pressure roller 12 and the upper surface of the filter screen 6, so that the distance between the three pressure rollers 12 and the upper surface of the filter screen 6 in the direction from the feed port 3 to the discharge port 4 gradually decreases, drives the driver 13 to rotate the three pressure rollers 12, and feeds the sludge from the feed port 3 to the surface of the filter screen 6, and the transmission roller 5 makes the filter screen 6 move, and the sludge is first The first step of squeezing and dehydration is carried out at the first pressing roller 12 to adjust the thickness of the filter cake. After being squeezed by the subsequent two pressing rollers 12, it is further squeezed to reduce the thickness of the filter cake and improve the water output rate. The water flows into the collecting tank 8 through the lower surface of the filter screen 6 and is discharged from the drain port 16 near the discharge port 4. During the squeezing and dehydration process, the scraper is used to scrape the sludge on the filter screen 6. The scraper 2 14 is used to clean the sludge on the surface of the pressing roller 12 to prevent the sludge from adhering to the surface and affecting the dehydration efficiency.

[0023] like Figure 1 As shown, a plurality of windows 9 are provided on the outer wall of the box body 2 .

[0024] Specifically, the window 9 is used for the driver 13 to move up and down in the window 9 when the height of the pressure roller 12 is adjusted.

[0025] like Figure 3 As shown, the extrusion mechanism includes a cylinder 10 fixedly connected to the upper surface of the box body 2, the output end of the cylinder 10 is fixedly connected to a U-shaped plate 11, a pressure roller 12 is rotatably connected to the U-shaped plate 11, the surface of the U-shaped plate 11 is fixedly connected to a driver 13, the output end of the driver 13 is fixedly connected to the pressure roller 12, and the driver 13 is arranged in the window 9.

[0026] Specifically, first drive three groups of cylinders 10 to adjust the height of the U-shaped plate 11, thereby adjusting the distance between the pressure roller 12 and the upper surface of the filter screen 6, so that the distance between the three pressure rollers 12 and the upper surface of the filter screen 6 in the direction from the feed port 3 to the discharge port 4 gradually decreases, and drive the driver 13 to rotate the three pressure rollers 12.

[0027] like Figure 2 As shown, there are three extrusion mechanisms, and the pressing rollers 12 in each group are located directly above the transmission rollers 5 .

[0028] Specifically, the filter screen 6 has movable elasticity, and the pressure roller 12 and the transmission roller 5 are aligned up and down, so that the filter screen 6 and the sludge on the filter screen 6 are squeezed by the pressure roller 12 and the transmission roller 5, thereby performing dehydration.

[0029] like Figure 3 As shown, a scraper 2 14 for cleaning the surface of the pressure roller 12 is fixedly connected to the side of the U-shaped plate 11.

[0030] Specifically, the scraper 2 14 is used to clean the sludge on the surface of the pressure roller 12 to prevent the sludge from adhering too much to the surface of the pressure roller 12, which not only increases the load of the driver 13 but also affects the dehydration efficiency.

[0031] like Figure 1 、 Figure 2 or Figure 3 As shown, baffles 15 are fixedly connected to both sides of the inner wall of the box body 2, the lower surface of the baffle 15 is in contact with the surface of the filter screen 6, and the width of the baffle 15 is slightly smaller than the distance from the pressure roller 12 to the inner wall of the box body 2.

[0032] Specifically, the sludge is fluid, and the baffle 15 blocks the sludge on the filter screen 6 to prevent the sludge from being transferred into the water collection tank 8 from both sides of the filter screen 6, resulting in excessive sludge in the water collection tank 8, making it impossible to collect water, or clogging the drain outlet 16.

[0033] As shown in the figure, the water collecting pool 8 is located between the upper and lower rows of driving rollers 5. The water collecting pool 8 is slightly tilted downward at one end toward the discharge port 4, and a drainage port 16 passing through the box body 2 is provided at the front end of the water collecting pool 8.

[0034] Specifically, water flows into the water collecting pool 8 through the lower surface of the filter 6. Since the water collecting pool 8 is slightly tilted downward at one end toward the discharge port 4, the water will gather at the drain outlet 16 from the bottom wall of the water collecting pool 8 and be discharged through the drain outlet 16.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pickling sludge dewatering device, comprising a workbench (1), characterized in that: The upper surface of the workbench (1) is fixedly connected to a box body (2), the two ends of the box body (2) are respectively an inlet (3) and an outlet (4), the inner wall of the box body (2) is provided with a plurality of transmission rollers (5), the surface of the transmission rollers (5) is provided with a filter screen (6), the upper surface of the box body (2) is fixedly connected to an extrusion mechanism, a scraper (7) is provided at the outlet (4) of the box body (2), and the inner wall of the box body (2) is fixedly connected to a water collecting tank (8).

2. The pickling sludge dewatering device according to claim 1, characterized in that: The outer wall of the box body (2) is provided with a plurality of windows (9).

3. The pickling sludge dewatering device according to claim 2, characterized in that: The extrusion mechanism comprises a cylinder (10) fixedly connected to the upper surface of the box (2); the output end of the cylinder (10) is fixedly connected to a U-shaped plate (11); a pressure roller (12) is rotatably connected to the U-shaped plate (11); a driver (13) is fixedly connected to the surface of the U-shaped plate (11); the output end of the driver (13) is fixedly connected to the pressure roller (12), and the driver (13) is arranged in the window (9).

4. The pickling sludge dewatering device according to claim 3, characterized in that: There are three extrusion mechanisms, and the pressing rollers (12) in each group are located directly above the transmission rollers (5).

5. A pickling sludge dewatering device according to claim 3 or 4, characterized in that: A second scraper (14) for cleaning the surface of the pressure roller (12) is fixedly connected to the side surface of the U-shaped plate (11).

6. A pickling sludge dewatering device according to claim 1, 2, 3 or 4, characterized in that: Baffles (15) are fixedly connected to both sides of the inner wall of the box body (2), the lower surface of the baffle (15) is in contact with the surface of the filter screen (6), and the width of the baffle (15) is slightly smaller than the distance from the pressure roller (12) to the inner wall of the box body (2).

7. The pickling sludge dewatering device according to claim 4, characterized in that: The water collecting pool (8) is located between the upper and lower rows of transmission rollers (5), and one end of the water collecting pool (8) is slightly tilted downward toward the discharge port (4), and a drainage port (16) passing through the box body (2) is provided at the front end of the water collecting pool (8).

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